x => efe0945164a7e582241f37ae8983c075f8f2e870-insert-latency.log 
y => timeout-insert-latency.log 

         n min     max median   average    stddev   p99
x 23663414 0.5 8167.75    9.4 10.796898 69.986391 22.15
y 23663414 0.5   20.15    9.4  8.834344  3.854402 18.30

                 5                         10                          15       
 |---------------+--------------------------+---------------------------+------|
                                +--------+----+                                 
1          ---------------------|        |    |-------------------              
                                +--------+----+                                 
                            +------------+----+                                 
2    -----------------------|            |    |---------------------------      
                            +------------+----+                                 
Legend: 1=data$x, 2=data$y

At 95% probablitiy:
===> average is statistically significant     (p=0.000000, diff ~1.962554)
===> variance is statistically significant    (p=0.000000)